package rabbitmq;

import com.rabbitmq.client.*;

import java.io.IOException;
import java.util.concurrent.TimeoutException;

public class ConsumerDemo {
    public static void main(String[] args) throws IOException, TimeoutException, InterruptedException {
        // 1. 创建连接
        ConnectionFactory connectionFactory = new ConnectionFactory();
        connectionFactory.setHost("47.109.89.128");
        connectionFactory.setPort(5672); // 需要提前开放端口号
        connectionFactory.setUsername("study"); // 账号
        connectionFactory.setPassword("study"); // 密码
        connectionFactory.setVirtualHost("bite"); // 虚拟主机
        Connection connection = connectionFactory.newConnection();
        // 2. 创建Channel
        Channel channel = connection.createChannel();
        // 3. 声明队列（可省略）
        channel.queueDeclare("hello", true, false, false, null);
        // 4. 消费消息
        /*
         * 参数1：队列名称
         * 参数2：是否自动确认
         * 参数3：接收到消息后，执行的逻辑
         */
        DefaultConsumer consumer = new DefaultConsumer(channel){
            // 从队列中收到消息，就会执行的方法
            @Override
            public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException {
                // TODO
                System.out.println("接收到消息:" + new String(body));
            }
        };
        channel.basicConsume("hello", true, consumer);
        // 等待程序执行完成
        Thread.sleep(2000);
        // 5. 释放资源
        channel.close();
        connection.close();
    }
}
